It was easy to work with SmartyAds SSPFirst and foremost I remain completely satisfied with SmartyAds service. They allow to chose advertisers; great support managers; possibility to sold unsold inventory (platform allowed us to work with a variety of partners); real transparency in payments. Besides, SmartyAds has header bidding solutions and can help with its implementation.
It was hard to define how accurate the algorithm is, sometimes the data can appear a little wonky. I wrote to support team and we come up with the solution. So, in common, the platform is user-friendly and it was easy to understand the documentations.